From: John Darrington <john@darrington.wattle.id.au>
Date: Sun, 8 Feb 2004 14:59:41 +0000 (+0000)
Subject: Added calculations for the correlation for paired samples in t-test
X-Git-Tag: v0.4.0~370
X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e7f87adee2e124bb3e0e3dc992d44fbe9b26e4c2;p=pspp-builds.git

Added calculations for the correlation for paired samples in t-test
---

diff --git a/Smake b/Smake
index eae10349..00ae6ca7 100644
--- a/Smake
+++ b/Smake
@@ -15,7 +15,17 @@ install-sh Makefile.in: intl Makefile.am aclocal.m4 config.h.in ABOUT-NLS
 	automake --add-missing
 
 po/Makefile.in.in intl ABOUT-NLS:
-	./gettextize -f -c --no-changelog --intl
+	touch -f Makefile.am Makefile.am-stamp
+	touch -f configure.ac configure.ac-stamp
+	cp -a configure.ac configure.ac-bak
+	cp -a Makefile.am Makefile.am-bak
+	gettextize -f -c --no-changelog --intl
+	cp -a Makefile.am-bak Makefile.am
+	touch -f Makefile.am-stamp Makefile.am
+	cp -a configure.ac-bak configure.ac
+	touch -f configure.ac-stamp configure.ac
+	$(RM) configure.ac-bak configure.ac-stamp
+	$(RM) Makefile.am-bak Makefile.am-stamp
 
 
 
diff --git a/po/en_GB.po b/po/en_GB.po
index 833c24b0..4566f684 100644
--- a/po/en_GB.po
+++ b/po/en_GB.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PSPP 0.3.1\n"
 "Report-Msgid-Bugs-To: pspp-dev@gnu.org\n"
-"POT-Creation-Date: 2004-02-03 19:04+0800\n"
+"POT-Creation-Date: 2004-02-07 14:00+0800\n"
 "PO-Revision-Date: 2004-01-23 13:04+0800\n"
 "Last-Translator: John Darrington <john@darrington.wattle.id.au>\n"
 "Language-Team: John Darrington <john@darrington.wattle.id.au>\n"
@@ -16,281 +16,282 @@ msgstr ""
 "Content-Transfer-Encoding: 8bit\n"
 "Plural-Forms: nplurals=2; plural=(n!=1);\n"
 
-#: src/crosstabs.q:255
+#: src/crosstabs.q:254
 msgid ""
 "Missing mode REPORT not allowed in general mode.  Assuming MISSING=TABLE."
 msgstr ""
 
-#: src/crosstabs.q:265
+#: src/crosstabs.q:264
 msgid "Write mode ALL not allowed in general mode.  Assuming WRITE=CELLS."
 msgstr ""
 
-#: src/crosstabs.q:324
+#: src/crosstabs.q:323
 msgid "expecting BY"
 msgstr ""
 
-#: src/crosstabs.q:391
+#: src/crosstabs.q:390
 msgid "VARIABLES must be specified before TABLES."
 msgstr ""
 
-#: src/crosstabs.q:428
+#: src/crosstabs.q:427
 #, c-format
 msgid "Maximum value (%ld) less than minimum value (%ld)."
 msgstr ""
 
-#: src/crosstabs.q:865
+#: src/crosstabs.q:864
 msgid "Summary."
 msgstr ""
 
-#: src/crosstabs.q:867
+#: src/crosstabs.q:866
 msgid "Cases"
 msgstr ""
 
-#: src/crosstabs.q:868 src/frequencies.q:999
+#: src/crosstabs.q:867 src/frequencies.q:999
 msgid "Valid"
 msgstr ""
 
-#: src/crosstabs.q:869 src/frequencies.q:1066
+#: src/crosstabs.q:868 src/frequencies.q:1066
 msgid "Missing"
 msgstr ""
 
-#: src/crosstabs.q:870 src/crosstabs.q:1071 src/crosstabs.q:1800
+#: src/crosstabs.q:869 src/crosstabs.q:1070 src/crosstabs.q:1799
 #: src/frequencies.q:1075
 msgid "Total"
 msgstr ""
 
-#: src/crosstabs.q:880 src/t-test.q:529 src/t-test.q:560 src/t-test.q:640
+#: src/crosstabs.q:879 src/t-test.q:517 src/t-test.q:540 src/t-test.q:605
+#: src/t-test.q:991
 msgid "N"
 msgstr ""
 
-#: src/crosstabs.q:881 src/frequencies.q:1003 src/frequencies.q:1004
+#: src/crosstabs.q:880 src/frequencies.q:1003 src/frequencies.q:1004
 #: src/frequencies.q:1005
 msgid "Percent"
 msgstr ""
 
-#: src/crosstabs.q:1120
+#: src/crosstabs.q:1119
 msgid "count"
 msgstr ""
 
-#: src/crosstabs.q:1121
+#: src/crosstabs.q:1120
 msgid "row %"
 msgstr ""
 
-#: src/crosstabs.q:1122
+#: src/crosstabs.q:1121
 msgid "column %"
 msgstr ""
 
-#: src/crosstabs.q:1123
+#: src/crosstabs.q:1122
 msgid "total %"
 msgstr ""
 
-#: src/crosstabs.q:1124
+#: src/crosstabs.q:1123
 msgid "expected"
 msgstr ""
 
-#: src/crosstabs.q:1125
+#: src/crosstabs.q:1124
 msgid "residual"
 msgstr ""
 
-#: src/crosstabs.q:1126
+#: src/crosstabs.q:1125
 msgid "std. resid."
 msgstr ""
 
-#: src/crosstabs.q:1127
+#: src/crosstabs.q:1126
 msgid "adj. resid."
 msgstr ""
 
-#: src/crosstabs.q:1160 src/crosstabs.q:1187 src/crosstabs.q:1207
-#: src/crosstabs.q:1228
+#: src/crosstabs.q:1159 src/crosstabs.q:1186 src/crosstabs.q:1206
+#: src/crosstabs.q:1227
 msgid "Statistic"
 msgstr ""
 
-#: src/crosstabs.q:1161 src/crosstabs.q:1188 src/crosstabs.q:1208
-#: src/crosstabs.q:1230 src/frequencies.q:1001 src/frequencies.q:1118
+#: src/crosstabs.q:1160 src/crosstabs.q:1187 src/crosstabs.q:1207
+#: src/crosstabs.q:1229 src/frequencies.q:1001 src/frequencies.q:1118
 #: src/sysfile-info.c:536 src/vfm.c:1094
 msgid "Value"
 msgstr ""
 
-#: src/crosstabs.q:1162 src/t-test.q:809 src/t-test.q:913 src/t-test.q:998
+#: src/crosstabs.q:1161 src/t-test.q:748 src/t-test.q:822 src/t-test.q:876
 msgid "df"
 msgstr ""
 
-#: src/crosstabs.q:1164
+#: src/crosstabs.q:1163
 msgid "Asymp. Sig. (2-sided)"
 msgstr ""
 
-#: src/crosstabs.q:1166
+#: src/crosstabs.q:1165
 msgid "Exact. Sig. (2-sided)"
 msgstr ""
 
-#: src/crosstabs.q:1168
+#: src/crosstabs.q:1167
 msgid "Exact. Sig. (1-sided)"
 msgstr ""
 
-#: src/crosstabs.q:1186 src/crosstabs.q:1227
+#: src/crosstabs.q:1185 src/crosstabs.q:1226
 msgid "Category"
 msgstr ""
 
-#: src/crosstabs.q:1189 src/crosstabs.q:1231
+#: src/crosstabs.q:1188 src/crosstabs.q:1230
 msgid "Asymp. Std. Error"
 msgstr ""
 
-#: src/crosstabs.q:1190 src/crosstabs.q:1232
+#: src/crosstabs.q:1189 src/crosstabs.q:1231
 msgid "Approx. T"
 msgstr ""
 
-#: src/crosstabs.q:1191 src/crosstabs.q:1233
+#: src/crosstabs.q:1190 src/crosstabs.q:1232
 msgid "Approx. Sig."
 msgstr ""
 
-#: src/crosstabs.q:1206
+#: src/crosstabs.q:1205
 #, c-format
 msgid " 95%% Confidence Interval"
 msgstr ""
 
-#: src/crosstabs.q:1209 src/t-test.q:813 src/t-test.q:910 src/t-test.q:1001
+#: src/crosstabs.q:1208 src/t-test.q:752 src/t-test.q:819 src/t-test.q:879
 msgid "Lower"
 msgstr ""
 
-#: src/crosstabs.q:1210 src/t-test.q:814 src/t-test.q:911 src/t-test.q:1002
+#: src/crosstabs.q:1209 src/t-test.q:753 src/t-test.q:820 src/t-test.q:880
 msgid "Upper"
 msgstr ""
 
-#: src/crosstabs.q:1229
+#: src/crosstabs.q:1228
 msgid "Type"
 msgstr ""
 
-#: src/crosstabs.q:1977
+#: src/crosstabs.q:1976
 msgid "Pearson Chi-Square"
 msgstr ""
 
-#: src/crosstabs.q:1978
+#: src/crosstabs.q:1977
 msgid "Likelihood Ratio"
 msgstr ""
 
-#: src/crosstabs.q:1979
+#: src/crosstabs.q:1978
 msgid "Fisher's Exact Test"
 msgstr ""
 
-#: src/crosstabs.q:1980
+#: src/crosstabs.q:1979
 msgid "Continuity Correction"
 msgstr ""
 
-#: src/crosstabs.q:1981
+#: src/crosstabs.q:1980
 msgid "Linear-by-Linear Association"
 msgstr ""
 
-#: src/crosstabs.q:2018 src/crosstabs.q:2088 src/crosstabs.q:2147
+#: src/crosstabs.q:2017 src/crosstabs.q:2087 src/crosstabs.q:2146
 msgid "N of Valid Cases"
 msgstr ""
 
-#: src/crosstabs.q:2034 src/crosstabs.q:2163
+#: src/crosstabs.q:2033 src/crosstabs.q:2162
 msgid "Nominal by Nominal"
 msgstr ""
 
-#: src/crosstabs.q:2035 src/crosstabs.q:2164
+#: src/crosstabs.q:2034 src/crosstabs.q:2163
 msgid "Ordinal by Ordinal"
 msgstr ""
 
-#: src/crosstabs.q:2036
+#: src/crosstabs.q:2035
 msgid "Interval by Interval"
 msgstr ""
 
-#: src/crosstabs.q:2037
+#: src/crosstabs.q:2036
 msgid "Measure of Agreement"
 msgstr ""
 
-#: src/crosstabs.q:2042
+#: src/crosstabs.q:2041
 msgid "Phi"
 msgstr ""
 
-#: src/crosstabs.q:2043
+#: src/crosstabs.q:2042
 msgid "Cramer's V"
 msgstr ""
 
-#: src/crosstabs.q:2044
+#: src/crosstabs.q:2043
 msgid "Contingency Coefficient"
 msgstr ""
 
-#: src/crosstabs.q:2045
+#: src/crosstabs.q:2044
 msgid "Kendall's tau-b"
 msgstr ""
 
-#: src/crosstabs.q:2046
+#: src/crosstabs.q:2045
 msgid "Kendall's tau-c"
 msgstr ""
 
-#: src/crosstabs.q:2047
+#: src/crosstabs.q:2046
 msgid "Gamma"
 msgstr ""
 
-#: src/crosstabs.q:2048
+#: src/crosstabs.q:2047
 msgid "Spearman Correlation"
 msgstr ""
 
-#: src/crosstabs.q:2049
+#: src/crosstabs.q:2048
 msgid "Pearson's R"
 msgstr ""
 
-#: src/crosstabs.q:2050
+#: src/crosstabs.q:2049
 msgid "Kappa"
 msgstr ""
 
-#: src/crosstabs.q:2120
+#: src/crosstabs.q:2119
 #, c-format
 msgid "Odds Ratio for %s (%g / %g)"
 msgstr ""
 
-#: src/crosstabs.q:2123
+#: src/crosstabs.q:2122
 #, c-format
 msgid "Odds Ratio for %s (%.*s / %.*s)"
 msgstr ""
 
-#: src/crosstabs.q:2131
+#: src/crosstabs.q:2130
 #, c-format
 msgid "For cohort %s = %g"
 msgstr ""
 
-#: src/crosstabs.q:2134
+#: src/crosstabs.q:2133
 #, c-format
 msgid "For cohort %s = %.*s"
 msgstr ""
 
-#: src/crosstabs.q:2165
+#: src/crosstabs.q:2164
 msgid "Nominal by Interval"
 msgstr ""
 
-#: src/crosstabs.q:2170
+#: src/crosstabs.q:2169
 msgid "Lambda"
 msgstr ""
 
-#: src/crosstabs.q:2171
+#: src/crosstabs.q:2170
 msgid "Goodman and Kruskal tau"
 msgstr ""
 
-#: src/crosstabs.q:2172
+#: src/crosstabs.q:2171
 msgid "Uncertainty Coefficient"
 msgstr ""
 
-#: src/crosstabs.q:2173
+#: src/crosstabs.q:2172
 msgid "Somers' d"
 msgstr ""
 
-#: src/crosstabs.q:2174
+#: src/crosstabs.q:2173
 msgid "Eta"
 msgstr ""
 
-#: src/crosstabs.q:2179
+#: src/crosstabs.q:2178
 msgid "Symmetric"
 msgstr ""
 
-#: src/crosstabs.q:2180 src/crosstabs.q:2181
+#: src/crosstabs.q:2179 src/crosstabs.q:2180
 #, c-format
 msgid "%s Dependent"
 msgstr ""
 
-#: src/descript.q:152 src/frequencies.q:94 src/t-test.q:530 src/t-test.q:561
-#: src/t-test.q:639 src/t-test.q:907
+#: src/descript.q:152 src/frequencies.q:94 src/t-test.q:518 src/t-test.q:541
+#: src/t-test.q:604 src/t-test.q:816
 msgid "Mean"
 msgstr ""
 
@@ -785,12 +786,10 @@ msgstr ""
 msgid "MXLOOPS must be at least 1."
 msgstr ""
 
-#: src/set.q:314
-msgid "TBFONTS not implemented."
-msgstr ""
-
-#: src/set.q:316
-msgid "TB1 not implemented."
+#: src/set.q:314 src/set.q:316 src/set.q:846 src/cmdline.c:112
+#: src/cmdline.c:131 src/cmdline.c:143 src/command.c:196
+#, c-format
+msgid "%s is not yet implemented."
 msgstr ""
 
 #: src/set.q:390
@@ -854,154 +853,167 @@ msgstr "Upper window colour must be between 0 and 6."
 msgid "Frame color must be between 0 and 6."
 msgstr "Frame colour must be between 0 and 6."
 
-#: src/set.q:846
-msgid "VIEWLENGTH not implemented."
-msgstr ""
-
 #: src/set.q:865
 msgid "Drive letter expected in WORKDEV subcommand."
 msgstr ""
 
-#: src/t-test.q:158
+#: src/t-test.q:169
 msgid "Exactly one of TESTVAL, GROUPS or PAIRS subcommands is required"
 msgstr ""
 
-#: src/t-test.q:172
+#: src/t-test.q:183
 msgid "VARIABLES subcommand is not appropriate with PAIRS"
 msgstr ""
 
-#: src/t-test.q:207 src/t-test.q:276
+#: src/t-test.q:223 src/t-test.q:294
 #, c-format
 msgid "`%s' is not a variable name"
 msgstr ""
 
-#: src/t-test.q:220
+#: src/t-test.q:236
 #, c-format
 msgid "Long string variable %s is not valid here."
 msgstr ""
 
-#: src/t-test.q:237
+#: src/t-test.q:252
 msgid ""
 "When applying GROUPS to a string variable, at least one value must be "
 "specified."
 msgstr ""
 
-#: src/t-test.q:318
+#: src/t-test.q:329
 #, c-format
 msgid ""
 "PAIRED was specified but the number of variables preceding WITH (%d) did not "
 "match the number following (%d)."
 msgstr ""
 
-#: src/t-test.q:337
+#: src/t-test.q:346
 msgid "At least two variables must be specified on PAIRS."
 msgstr ""
 
-#: src/t-test.q:525
+#: src/t-test.q:515
 msgid "One-Sample Statistics"
 msgstr ""
 
-#: src/t-test.q:531 src/t-test.q:562 src/t-test.q:641 src/t-test.q:908
+#: src/t-test.q:519 src/t-test.q:542 src/t-test.q:606 src/t-test.q:817
 msgid "Std. Deviation"
 msgstr ""
 
-#: src/t-test.q:532 src/t-test.q:563 src/t-test.q:642
+#: src/t-test.q:520 src/t-test.q:543 src/t-test.q:607
 msgid "SE. Mean"
 msgstr ""
 
-#: src/t-test.q:554
+#: src/t-test.q:537
 msgid "Group Statistics"
 msgstr ""
 
-#: src/t-test.q:634
+#: src/t-test.q:601
 msgid "Paired Sample Statistics"
 msgstr ""
 
-#: src/t-test.q:665 src/t-test.q:940
+#: src/t-test.q:625 src/t-test.q:839 src/t-test.q:1004
 #, c-format
 msgid "Pair %d"
 msgstr ""
 
-#: src/t-test.q:781
+#: src/t-test.q:733
 msgid "Independent Samples Test"
 msgstr ""
 
-#: src/t-test.q:800
+#: src/t-test.q:741
 msgid "Levine's Test for Equality of Variances"
 msgstr ""
 
-#: src/t-test.q:803
+#: src/t-test.q:743
 msgid "t-test for Equality of Means"
 msgstr ""
 
-#: src/t-test.q:806
+#: src/t-test.q:745
 msgid "F"
 msgstr ""
 
-#: src/t-test.q:807
+#: src/t-test.q:746 src/t-test.q:993
 msgid "Sig."
 msgstr ""
 
-#: src/t-test.q:808 src/t-test.q:912 src/t-test.q:997
+#: src/t-test.q:747 src/t-test.q:821 src/t-test.q:875
 msgid "t"
 msgstr ""
 
-#: src/t-test.q:810 src/t-test.q:914 src/t-test.q:999
+#: src/t-test.q:749 src/t-test.q:823 src/t-test.q:877
 msgid "Sig. (2-tailed)"
 msgstr ""
 
-#: src/t-test.q:811 src/t-test.q:1000
+#: src/t-test.q:750 src/t-test.q:878
 msgid "Mean Difference"
 msgstr ""
 
-#: src/t-test.q:812
+#: src/t-test.q:751
 msgid "Std. Error Difference"
 msgstr ""
 
-#: src/t-test.q:819 src/t-test.q:898 src/t-test.q:985
+#: src/t-test.q:757 src/t-test.q:809 src/t-test.q:869
 #, c-format
 msgid "%d%% Confidence Interval of the Difference"
 msgstr ""
 
-#: src/t-test.q:846
+#: src/t-test.q:777
 msgid "Equal variances assumed"
 msgstr ""
 
-#: src/t-test.q:849
+#: src/t-test.q:780
 msgid "Equal variances not assumed"
 msgstr ""
 
-#: src/t-test.q:872
+#: src/t-test.q:798
 msgid "Paired Samples Test"
 msgstr ""
 
-#: src/t-test.q:880
+#: src/t-test.q:801
 msgid "Paired Differences"
 msgstr ""
 
-#: src/t-test.q:909
+#: src/t-test.q:818
 msgid "Std. Error Mean"
 msgstr ""
 
-#: src/t-test.q:968
+#: src/t-test.q:860
 msgid "One-Sample Test"
 msgstr ""
 
-#: src/t-test.q:975
+#: src/t-test.q:864
 #, c-format
 msgid "Test Value = %f"
 msgstr ""
 
-#: src/aggregate.c:188
-msgid "OUTFILE specified multiple times."
+#: src/t-test.q:920 src/t-test.q:936
+#, c-format
+msgid "Error calculating T statistic (cdft returned %d)."
 msgstr ""
 
-#: src/aggregate.c:214
-msgid "while expecting COLUMNWISE"
+#: src/t-test.q:988
+msgid "Paired Samples Correlations"
+msgstr ""
+
+#: src/t-test.q:992
+msgid "Correlation"
+msgstr ""
+
+#: src/t-test.q:1008
+#, c-format
+msgid "%s & %s"
+msgstr ""
+
+#: src/aggregate.c:188 src/aggregate.c:229 src/data-list.c:1321
+#: src/data-list.c:1356 src/data-list.c:1369 src/data-list.c:1382
+#: src/data-list.c:1415
+#, c-format
+msgid "%s subcommand given multiple times."
 msgstr ""
 
-#: src/aggregate.c:229
-msgid "BREAK specified multiple times."
+#: src/aggregate.c:214
+msgid "while expecting COLUMNWISE"
 msgstr ""
 
 #: src/aggregate.c:258
@@ -1208,11 +1220,6 @@ msgstr ""
 msgid "Duplicate variable name %s among target variables."
 msgstr ""
 
-#: src/cmdline.c:112 src/cmdline.c:131 src/cmdline.c:143 src/command.c:196
-#, c-format
-msgid "%s is not yet implemented."
-msgstr ""
-
 #: src/cmdline.c:157
 msgid ""
 "\n"
@@ -1746,36 +1753,16 @@ msgid ""
 "TYPE."
 msgstr ""
 
-#: src/data-list.c:1321
-msgid "STARTS subcommand given multiple times."
-msgstr ""
-
 #: src/data-list.c:1345
 #, c-format
 msgid "STARTS beginning column (%d) exceeds STARTS ending column (%d)."
 msgstr ""
 
-#: src/data-list.c:1356
-msgid "OCCURS subcommand given multiple times."
-msgstr ""
-
-#: src/data-list.c:1369
-msgid "LENGTH subcommand given multiple times."
-msgstr ""
-
-#: src/data-list.c:1382
-msgid "CONTINUED subcommand given multiple times."
-msgstr ""
-
 #: src/data-list.c:1401
 #, c-format
 msgid "CONTINUED beginning column (%d) exceeds CONTINUED ending column (%d)."
 msgstr ""
 
-#: src/data-list.c:1415
-msgid "ID subcommand given multiple times."
-msgstr ""
-
 #: src/data-list.c:1424
 #, c-format
 msgid "ID beginning column (%ld) must be positive."
diff --git a/po/pspp.pot b/po/pspp.pot
index 07117ae5..6f7f7a9f 100644
--- a/po/pspp.pot
+++ b/po/pspp.pot
@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: pspp-dev@gnu.org\n"
-"POT-Creation-Date: 2004-02-05 14:00+0800\n"
+"POT-Creation-Date: 2004-02-07 14:00+0800\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -60,7 +60,8 @@ msgstr ""
 msgid "Total"
 msgstr ""
 
-#: src/crosstabs.q:879 src/t-test.q:510 src/t-test.q:533 src/t-test.q:598
+#: src/crosstabs.q:879 src/t-test.q:517 src/t-test.q:540 src/t-test.q:605
+#: src/t-test.q:991
 msgid "N"
 msgstr ""
 
@@ -112,7 +113,7 @@ msgstr ""
 msgid "Value"
 msgstr ""
 
-#: src/crosstabs.q:1161 src/t-test.q:741 src/t-test.q:815 src/t-test.q:869
+#: src/crosstabs.q:1161 src/t-test.q:748 src/t-test.q:822 src/t-test.q:876
 msgid "df"
 msgstr ""
 
@@ -149,11 +150,11 @@ msgstr ""
 msgid " 95%% Confidence Interval"
 msgstr ""
 
-#: src/crosstabs.q:1208 src/t-test.q:745 src/t-test.q:812 src/t-test.q:872
+#: src/crosstabs.q:1208 src/t-test.q:752 src/t-test.q:819 src/t-test.q:879
 msgid "Lower"
 msgstr ""
 
-#: src/crosstabs.q:1209 src/t-test.q:746 src/t-test.q:813 src/t-test.q:873
+#: src/crosstabs.q:1209 src/t-test.q:753 src/t-test.q:820 src/t-test.q:880
 msgid "Upper"
 msgstr ""
 
@@ -290,8 +291,8 @@ msgstr ""
 msgid "%s Dependent"
 msgstr ""
 
-#: src/descript.q:152 src/frequencies.q:94 src/t-test.q:511 src/t-test.q:534
-#: src/t-test.q:597 src/t-test.q:809
+#: src/descript.q:152 src/frequencies.q:94 src/t-test.q:518 src/t-test.q:541
+#: src/t-test.q:604 src/t-test.q:816
 msgid "Mean"
 msgstr ""
 
@@ -857,141 +858,154 @@ msgstr ""
 msgid "Drive letter expected in WORKDEV subcommand."
 msgstr ""
 
-#: src/t-test.q:166
+#: src/t-test.q:169
 msgid "Exactly one of TESTVAL, GROUPS or PAIRS subcommands is required"
 msgstr ""
 
-#: src/t-test.q:180
+#: src/t-test.q:183
 msgid "VARIABLES subcommand is not appropriate with PAIRS"
 msgstr ""
 
-#: src/t-test.q:216 src/t-test.q:287
+#: src/t-test.q:223 src/t-test.q:294
 #, c-format
 msgid "`%s' is not a variable name"
 msgstr ""
 
-#: src/t-test.q:229
+#: src/t-test.q:236
 #, c-format
 msgid "Long string variable %s is not valid here."
 msgstr ""
 
-#: src/t-test.q:245
+#: src/t-test.q:252
 msgid ""
 "When applying GROUPS to a string variable, at least one value must be "
 "specified."
 msgstr ""
 
-#: src/t-test.q:322
+#: src/t-test.q:329
 #, c-format
 msgid ""
 "PAIRED was specified but the number of variables preceding WITH (%d) did not "
 "match the number following (%d)."
 msgstr ""
 
-#: src/t-test.q:339
+#: src/t-test.q:346
 msgid "At least two variables must be specified on PAIRS."
 msgstr ""
 
-#: src/t-test.q:508
+#: src/t-test.q:515
 msgid "One-Sample Statistics"
 msgstr ""
 
-#: src/t-test.q:512 src/t-test.q:535 src/t-test.q:599 src/t-test.q:810
+#: src/t-test.q:519 src/t-test.q:542 src/t-test.q:606 src/t-test.q:817
 msgid "Std. Deviation"
 msgstr ""
 
-#: src/t-test.q:513 src/t-test.q:536 src/t-test.q:600
+#: src/t-test.q:520 src/t-test.q:543 src/t-test.q:607
 msgid "SE. Mean"
 msgstr ""
 
-#: src/t-test.q:530
+#: src/t-test.q:537
 msgid "Group Statistics"
 msgstr ""
 
-#: src/t-test.q:594
+#: src/t-test.q:601
 msgid "Paired Sample Statistics"
 msgstr ""
 
-#: src/t-test.q:618 src/t-test.q:832
+#: src/t-test.q:625 src/t-test.q:839 src/t-test.q:1004
 #, c-format
 msgid "Pair %d"
 msgstr ""
 
-#: src/t-test.q:726
+#: src/t-test.q:733
 msgid "Independent Samples Test"
 msgstr ""
 
-#: src/t-test.q:734
+#: src/t-test.q:741
 msgid "Levine's Test for Equality of Variances"
 msgstr ""
 
-#: src/t-test.q:736
+#: src/t-test.q:743
 msgid "t-test for Equality of Means"
 msgstr ""
 
-#: src/t-test.q:738
+#: src/t-test.q:745
 msgid "F"
 msgstr ""
 
-#: src/t-test.q:739
+#: src/t-test.q:746 src/t-test.q:993
 msgid "Sig."
 msgstr ""
 
-#: src/t-test.q:740 src/t-test.q:814 src/t-test.q:868
+#: src/t-test.q:747 src/t-test.q:821 src/t-test.q:875
 msgid "t"
 msgstr ""
 
-#: src/t-test.q:742 src/t-test.q:816 src/t-test.q:870
+#: src/t-test.q:749 src/t-test.q:823 src/t-test.q:877
 msgid "Sig. (2-tailed)"
 msgstr ""
 
-#: src/t-test.q:743 src/t-test.q:871
+#: src/t-test.q:750 src/t-test.q:878
 msgid "Mean Difference"
 msgstr ""
 
-#: src/t-test.q:744
+#: src/t-test.q:751
 msgid "Std. Error Difference"
 msgstr ""
 
-#: src/t-test.q:750 src/t-test.q:802 src/t-test.q:862
+#: src/t-test.q:757 src/t-test.q:809 src/t-test.q:869
 #, c-format
 msgid "%d%% Confidence Interval of the Difference"
 msgstr ""
 
-#: src/t-test.q:770
+#: src/t-test.q:777
 msgid "Equal variances assumed"
 msgstr ""
 
-#: src/t-test.q:773
+#: src/t-test.q:780
 msgid "Equal variances not assumed"
 msgstr ""
 
-#: src/t-test.q:791
+#: src/t-test.q:798
 msgid "Paired Samples Test"
 msgstr ""
 
-#: src/t-test.q:794
+#: src/t-test.q:801
 msgid "Paired Differences"
 msgstr ""
 
-#: src/t-test.q:811
+#: src/t-test.q:818
 msgid "Std. Error Mean"
 msgstr ""
 
-#: src/t-test.q:853
+#: src/t-test.q:860
 msgid "One-Sample Test"
 msgstr ""
 
-#: src/t-test.q:857
+#: src/t-test.q:864
 #, c-format
 msgid "Test Value = %f"
 msgstr ""
 
-#: src/t-test.q:913 src/t-test.q:929
+#: src/t-test.q:920 src/t-test.q:936
 #, c-format
 msgid "Error calculating T statistic (cdft returned %d)."
 msgstr ""
 
+#: src/t-test.q:988
+msgid "Paired Samples Correlations"
+msgstr ""
+
+#: src/t-test.q:992
+msgid "Correlation"
+msgstr ""
+
+#: src/t-test.q:1008
+#, c-format
+msgid "%s & %s"
+msgstr ""
+
 #: src/aggregate.c:188 src/aggregate.c:229 src/data-list.c:1321
 #: src/data-list.c:1356 src/data-list.c:1369 src/data-list.c:1382
 #: src/data-list.c:1415
@@ -2306,10 +2320,12 @@ msgid "Boolean"
 msgstr ""
 
 #: src/expr-prs.c:1695
+#, c-format
 msgid "!!TERMINAL!!"
 msgstr ""
 
 #: src/expr-prs.c:1721
+#, c-format
 msgid "!!SENTINEL!!"
 msgstr ""
 
@@ -2627,14 +2643,17 @@ msgid "`)' expected after output format."
 msgstr ""
 
 #: src/formats.c:153
+#, c-format
 msgid "Formats:\n"
 msgstr ""
 
 #: src/formats.c:154
+#, c-format
 msgid "  Name      Print         Write\n"
 msgstr ""
 
 #: src/get.c:110
+#, c-format
 msgid "GET translation table from file to memory:\n"
 msgstr ""
 
@@ -2672,6 +2691,7 @@ msgid "Requested renaming duplicates variable name %s."
 msgstr ""
 
 #: src/get.c:461
+#, c-format
 msgid ""
 "\n"
 "Variables in dictionary:\n"
@@ -2731,6 +2751,7 @@ msgid "expecting COMM or TAPE"
 msgstr ""
 
 #: src/get.c:1393
+#, c-format
 msgid "IMPORT translation table from file to memory:\n"
 msgstr ""
 
@@ -2924,6 +2945,7 @@ msgid "<<fallback>>"
 msgstr ""
 
 #: src/hash.c:492
+#, c-format
 msgid "hash table:"
 msgstr ""
 
@@ -2933,6 +2955,7 @@ msgid "bad ordering of keys %d and %d\n"
 msgstr ""
 
 #: src/heap.c:177
+#, c-format
 msgid "Heap contents:\n"
 msgstr ""
 
@@ -3073,6 +3096,7 @@ msgid "The rest of this command has been discarded."
 msgstr ""
 
 #: src/lexer.c:842 src/print.c:1174
+#, c-format
 msgid "<ERROR>"
 msgstr ""
 
@@ -3390,6 +3414,7 @@ msgid "(long string variable)"
 msgstr ""
 
 #: src/mis-val.c:376
+#, c-format
 msgid "(no missing values)\n"
 msgstr ""
 
@@ -3534,6 +3559,7 @@ msgid "Error reading device definition file."
 msgstr ""
 
 #: src/output.c:462
+#, c-format
 msgid ""
 "Driver classes:\n"
 "\t"
@@ -4130,10 +4156,12 @@ msgid ""
 msgstr ""
 
 #: src/recode.c:869
+#, c-format
 msgid "!!END!!"
 msgstr ""
 
 #: src/recode.c:890 src/recode.c:906
+#, c-format
 msgid "!!ERROR!!"
 msgstr ""
 
@@ -4967,6 +4995,7 @@ msgid "Value labels:"
 msgstr ""
 
 #: src/val-labs.c:237
+#, c-format
 msgid "    (no value labels)\n"
 msgstr ""
 
@@ -4979,10 +5008,12 @@ msgid "Truncating variable label to 120 characters."
 msgstr ""
 
 #: src/var-labs.c:87
+#, c-format
 msgid "Variable labels:\n"
 msgstr ""
 
 #: src/var-labs.c:94
+#, c-format
 msgid "(no variable label)"
 msgstr ""
 
diff --git a/src/t-test.q b/src/t-test.q
index c2fc85d7..e7555033 100644
--- a/src/t-test.q
+++ b/src/t-test.q
@@ -37,6 +37,8 @@
 #include "var.h"
 #include "vfm.h"
 #include "pool.h"
+#include "hash.h"
+#include "stats.h"
 
 /* (specification)
    "T-TEST" (tts_):
@@ -68,8 +70,12 @@ static union value groups_values[2];
 
 /* PAIRS: Number of pairs to be compared ; each pair. */
 static int n_pairs ;
-typedef struct variable *pair_t[2] ;
-static pair_t *pairs;
+struct pair 
+{
+  struct variable *v[2];
+  double correlation;
+};
+static struct pair *pairs;
 
 
 static int parse_value (union value * v, int type) ;
@@ -142,6 +148,13 @@ static int one_sample_calc (struct ccase *);
 static void one_sample_precalc (void);
 static void one_sample_postcalc (void);
 
+static int  paired_calc (struct ccase *);
+static void paired_precalc (void);
+static void paired_postcalc (void);
+
+static int compare_var_name (const void *a_, const void *b_, void *v_ unused);
+static unsigned hash_var_name (const void *a_, void *v_ unused);
+
 
 int
 cmd_t_test(void)
@@ -178,16 +191,59 @@ cmd_t_test(void)
   else
     mode=T_PAIRED;
 
-  if ( mode == T_PAIRED && cmd.sbc_variables) 
+  if ( mode == T_PAIRED) 
     {
-      msg(SE, _("VARIABLES subcommand is not appropriate with PAIRS"));
-      return CMD_FAILURE;
+      if (cmd.sbc_variables) 
+	{
+	  msg(SE, _("VARIABLES subcommand is not appropriate with PAIRS"));
+	  return CMD_FAILURE;
+	}
+      else
+	{
+	  /* Iterate through the pairs and put each variable that is a 
+	     member of a pair into cmd.v_variables */
+
+	  int i;
+	  struct hsh_iterator hi;
+	  struct hsh_table *hash;
+	  struct variable *v;
+
+	  hash=hsh_create(n_pairs,compare_var_name,hash_var_name,0,0);
+
+	  for (i=0; i < n_pairs; ++i)
+	    {
+	      hsh_insert(hash,pairs[i].v[0]);
+	      hsh_insert(hash,pairs[i].v[1]);
+	    }
+
+	  assert(cmd.n_variables == 0);
+	  cmd.n_variables = hsh_count(hash);
+
+	  cmd.v_variables = xrealloc(cmd.v_variables,
+				     sizeof(struct variable) * cmd.n_variables);
+	  /* Iterate through the hash */
+	  for (i=0,v = (struct variable *) hsh_first(hash,&hi);
+	       v != 0;
+	       v=hsh_next(hash,&hi) ) 
+	    cmd.v_variables[i++]=v;
+
+	  hsh_destroy(hash);
+	}
     }
 
+
   procedure(common_precalc,common_calc,common_postcalc);
 
-  if (mode == T_1_SAMPLE)
-    procedure(one_sample_precalc,one_sample_calc,one_sample_postcalc);
+  switch(mode)
+    {
+    case T_1_SAMPLE:
+      procedure(one_sample_precalc,one_sample_calc,one_sample_postcalc);
+      break;
+    case T_PAIRED:
+      procedure(paired_precalc,paired_calc,paired_postcalc);
+      break;
+    }
+  
 
   t_test_pool = pool_create ();
 
@@ -353,7 +409,7 @@ tts_custom_pairs (struct cmd_t_test *cmd unused)
     }
 
   /* Allocate storage for the pairs */
-  pairs = xrealloc(pairs,sizeof(pair_t) *n_pairs);
+  pairs = xrealloc(pairs,sizeof(struct pair) *n_pairs);
 
   /* Populate the pairs with the appropriate variables */
   if ( paired ) 
@@ -363,8 +419,8 @@ tts_custom_pairs (struct cmd_t_test *cmd unused)
       assert(n_pairs == n_vars/2);
       for (i = 0; i < n_pairs ; ++i)
 	{
-	  pairs[i][0] = vars[i];
-	  pairs[i][1] = vars[i+n_pairs];
+	  pairs[i].v[0] = vars[i];
+	  pairs[i].v[1] = vars[i+n_pairs];
 	}
     }
   else if (n_before_WITH > 0) /* WITH keyword given, but not PAIRED keyword */
@@ -376,8 +432,8 @@ tts_custom_pairs (struct cmd_t_test *cmd unused)
 	{
 	  for(j=0 ; j < n_after_WITH ; ++j)
 	    {
-	      pairs[p][0] = vars[i];
-	      pairs[p][1] = vars[j+n_before_WITH];
+	      pairs[p].v[0] = vars[i];
+	      pairs[p].v[1] = vars[j+n_before_WITH];
 	      ++p;
 	    }
 	}
@@ -391,8 +447,8 @@ tts_custom_pairs (struct cmd_t_test *cmd unused)
 	{
 	  for(j=i+1 ; j < n_vars ; ++j)
 	    {
-	      pairs[p][0] = vars[i];
-	      pairs[p][1] = vars[j];
+	      pairs[p].v[0] = vars[i];
+	      pairs[p].v[1] = vars[j];
 	      ++p;
 	    }
 	}
@@ -613,23 +669,35 @@ void
 ssbox_paired_populate(struct ssbox *ssb,struct cmd_t_test *cmd unused)
 {
   int i;
-  struct string ds;
 
   assert(ssb->t);
-  ds_init(t_test_pool,&ds,15);
 
   for (i=0; i < n_pairs; ++i)
     {
-      ds_clear(&ds);
+      int j;
+
+      tab_text (ssb->t, 0, i*2+1, TAB_LEFT | TAT_PRINTF , _("Pair %d"),i);
+
+      for (j=0 ; j < 2 ; ++j) 
+	{
+	  struct t_test_proc *ttp;
+
+	  ttp=&pairs[i].v[j]->p.t_t;
+
+	  /* Titles */
 
-      ds_printf(&ds,_("Pair %d"),i);
+	  tab_text (ssb->t, 1, i*2+j+1, TAB_LEFT, pairs[i].v[j]->name);
+
+	  /* Values */
+	  tab_float (ssb->t,2, i*2+j+1, TAB_RIGHT, ttp->mean, 8, 2);
+	  tab_float (ssb->t,3, i*2+j+1, TAB_RIGHT, ttp->n, 2, 0);
+	  tab_float (ssb->t,4, i*2+j+1, TAB_RIGHT, ttp->std_dev, 8, 3);
+	  tab_float (ssb->t,5, i*2+j+1, TAB_RIGHT, ttp->se_mean, 8, 3);
+
+	}
 
-      tab_text (ssb->t, 0, i*2+1, TAB_LEFT, ds.string);
-      tab_text (ssb->t, 1, i*2+1, TAB_LEFT, pairs[i][0]->name);
-      tab_text (ssb->t, 1, i*2+2, TAB_LEFT, pairs[i][1]->name);
     }
 
-  ds_destroy(&ds);
 }
 
 /* Populate the one sample ssbox */
@@ -724,8 +792,6 @@ trbox_independent_samples_init(struct trbox *self,
   const int hsize=11;
   const int vsize=cmd->n_variables*2+3;
 
-  struct string ds;
-
   assert(self);
   self->populate = trbox_independent_samples_populate;
 
@@ -752,14 +818,10 @@ trbox_independent_samples_init(struct trbox *self,
   tab_text(self->t,9,2, TAB_CENTER | TAT_TITLE,_("Lower"));
   tab_text(self->t,10,2, TAB_CENTER | TAT_TITLE,_("Upper"));
 
-  ds_init(t_test_pool,&ds,80);
-		
-  ds_printf(&ds,_("%d%% Confidence Interval of the Difference"),
-	    (int)round(cmd->criteria*100.0));
+  tab_joint_text(self->t, 9, 1, 10, 1, TAB_CENTER | TAT_PRINTF, 
+		 _("%d%% Confidence Interval of the Difference"),
+		 (int)round(cmd->criteria*100.0));
 
-  tab_joint_text(self->t,9,1,10,1,TAB_CENTER, ds.string);
-
-  ds_destroy(&ds);
 }
 
 /* Populate the independent samples trbox */
@@ -790,8 +852,6 @@ trbox_paired_init(struct trbox *self,
   const int hsize=10;
   const int vsize=n_pairs*2+3;
 
-  struct string ds;
-
   self->populate = trbox_paired_populate;
 
   trbox_base_init(self,n_pairs*2,hsize);
@@ -804,14 +864,9 @@ trbox_paired_init(struct trbox *self,
   tab_hline(self->t,TAL_1,5,6, 2);
   tab_vline(self->t,TAL_0,6,0,1);
 
-  ds_init(t_test_pool,&ds,80);
-		
-  ds_printf(&ds,_("%d%% Confidence Interval of the Difference"),
-	    (int)round(cmd->criteria*100.0));
-
-  tab_joint_text(self->t,5,1,6,1,TAB_CENTER, ds.string);
-
-  ds_destroy(&ds);
+  tab_joint_text(self->t, 5, 1, 6, 1, TAB_CENTER | TAT_PRINTF, 
+		 _("%d%% Confidence Interval of the Difference"),
+		 (int)round(cmd->criteria*100.0));
 
   tab_text (self->t, 2, 2, TAB_CENTER | TAT_TITLE, _("Mean"));
   tab_text (self->t, 3, 2, TAB_CENTER | TAT_TITLE, _("Std. Deviation"));
@@ -829,20 +884,14 @@ trbox_paired_populate(struct trbox *trb,
 			      struct cmd_t_test *cmd unused)
 {
   int i;
-  struct string ds;
-
-  ds_init(t_test_pool,&ds,15);  
 
   for (i=0; i < n_pairs; ++i)
     {
-      ds_clear(&ds);
-      ds_printf(&ds,_("Pair %d"),i);
-
-      tab_text (trb->t, 0, i*2+3, TAB_LEFT, ds.string);
-      tab_text (trb->t, 1, i*2+3, TAB_LEFT, pairs[i][0]->name);
-      tab_text (trb->t, 1, i*2+4, TAB_LEFT, pairs[i][1]->name);
+      tab_text (trb->t, 0, i*2+3, TAB_LEFT | TAT_PRINTF, _("Pair %d"),i); 
+      tab_text (trb->t, 1, i*2+3, TAB_LEFT, pairs[i].v[0]->name);
+      tab_text (trb->t, 1, i*2+4, TAB_LEFT, pairs[i].v[1]->name);
     }
-  ds_destroy(&ds);
+
 }
 
 /* Initialize the one sample trbox */
@@ -852,24 +901,23 @@ trbox_one_sample_init(struct trbox *self, struct cmd_t_test *cmd )
   const int hsize=7;
   const int vsize=cmd->n_variables+3;
 
-  struct string ds;
-  
   self->populate = trbox_one_sample_populate;
 
   trbox_base_init(self, cmd->n_variables,hsize);
   tab_title (self->t, 0, _("One-Sample Test"));
   tab_hline(self->t, TAL_1, 1, hsize - 1, 1);
   tab_vline(self->t, TAL_2, 1, 0, vsize);
-  ds_init(t_test_pool, &ds, 80);
-  ds_printf(&ds,_("Test Value = %f"),cmd->n_testval);
-  tab_joint_text(self->t, 1, 0, hsize-1,0, TAB_CENTER,ds.string);
+
+  tab_joint_text(self->t, 1, 0, hsize-1,0, TAB_CENTER | TAT_PRINTF, 
+		 _("Test Value = %f"),cmd->n_testval);
+
   tab_box(self->t, -1, -1, -1, TAL_1, 1,1,hsize-1,vsize-1);
 
-  ds_clear(&ds);
-  ds_printf(&ds,_("%d%% Confidence Interval of the Difference"),
-	    (int)round(cmd->criteria*100.0));
-  tab_joint_text(self->t,5,1,6,1,TAB_CENTER, ds.string);
-  ds_destroy(&ds);
+
+  tab_joint_text(self->t,5,1,6,1,TAB_CENTER  | TAT_PRINTF, 
+		 _("%d%% Confidence Interval of the Difference"),
+		 (int)round(cmd->criteria*100.0));
+
   tab_vline(self->t,TAL_0,6,1,1);
   tab_hline(self->t,TAL_1,5,6,2);
   tab_text (self->t, 1, 2, TAB_CENTER | TAT_TITLE, _("t"));
@@ -992,26 +1040,48 @@ pscbox(struct cmd_t_test *cmd)
   tab_text(table, 3,0, TAB_CENTER | TAT_TITLE, _("Correlation"));
   tab_text(table, 4,0, TAB_CENTER | TAT_TITLE, _("Sig."));
 
-  /* row headings */
-  {
-  struct string ds;
-
-  ds_init(t_test_pool,&ds,15);
 
   for (i=0; i < n_pairs; ++i)
     {
-      ds_clear(&ds);
-      ds_printf(&ds,_("Pair %d"),i);
-      tab_text(table, 0,i+1, TAB_LEFT | TAT_TITLE, ds.string);
+      int which =1;
+      double p,q;
 
-      ds_clear(&ds);
-      ds_printf(&ds,_("%s & %s"),pairs[i][0]->name,pairs[i][1]->name);
-      tab_text(table, 1,i+1, TAB_LEFT | TAT_TITLE, ds.string);
-    }
+      int status;
+      double bound;
+
+      const double df = pairs[i].v[0]->p.t_t.n -2;
+
+      double correlation_t = 
+	pairs[i].correlation * sqrt(df) /
+	sqrt(1 - sqr(pairs[i].correlation));
+	
+
+      /* row headings */
+      tab_text(table, 0,i+1, TAB_LEFT | TAT_TITLE | TAT_PRINTF, 
+	       _("Pair %d"), i);
+      
+      tab_text(table, 1,i+1, TAB_LEFT | TAT_TITLE | TAT_PRINTF, 
+	       _("%s & %s"), pairs[i].v[0]->name, pairs[i].v[1]->name);
 
-  ds_destroy(&ds);
-  }
 
+      /* row data */
+      tab_float(table, 3, i+1, TAB_RIGHT, pairs[i].correlation, 8, 3);
+      tab_float(table, 2, i+1, TAB_RIGHT, pairs[i].v[0]->p.t_t.n , 4, 0);
+
+
+      cdft(&which, &p, &q, &correlation_t, &df, &status, &bound);
+
+      if ( 0 != status )
+	{
+	  msg( SE, _("Error calculating T statistic (cdft returned %d)."),status);
+	}
+
+
+      tab_float(table, 4, i+1, TAB_RIGHT, q*2.0, 8, 3);
+
+
+      
+    }
 
   tab_submit(table);
 }
@@ -1051,7 +1121,7 @@ static void
 common_precalc (void)
 {
   int i=0;
-  
+
   for(i=0; i< cmd.n_variables ; ++i) 
     {
       struct t_test_proc *ttp;
@@ -1082,7 +1152,6 @@ common_postcalc (void)
 			 ) ;
 
       ttp->se_mean = ttp->std_dev / sqrt(ttp->n);
-
       ttp->mean_diff= ttp->sum_diff / ttp->n;
     }
 }
@@ -1140,3 +1209,68 @@ one_sample_postcalc (void)
       ttp->mean_diff = ttp->sum_diff / ttp->n ;
     }
 }
+
+
+
+static int
+compare_var_name (const void *a_, const void *b_, void *v_ unused)
+{
+  const struct variable *a = a_;
+  const struct variable *b = b_;
+
+  return strcmp(a->name,b->name);
+}
+
+static unsigned
+hash_var_name (const void *a_, void *v_ unused)
+{
+  const struct variable *a = a_;
+
+  return hsh_hash_bytes (a->name, strlen(a->name));
+}
+
+
+static void 
+paired_precalc (void)
+{
+  int i;
+  for(i=0; i < n_pairs ; ++i )
+    pairs[i].correlation=0;
+}
+
+static int  
+paired_calc (struct ccase *c)
+{
+  int i;
+
+  for(i=0; i < n_pairs ; ++i )
+    {
+      struct variable *v0 = pairs[i].v[0];
+      struct variable *v1 = pairs[i].v[1];
+
+      union value *val0 = &c->data[v0->fv];
+      union value *val1 = &c->data[v1->fv];
+
+      pairs[i].correlation += ( val0->f - pairs[i].v[0]->p.t_t.mean )
+	                      *
+	                      ( val1->f - pairs[i].v[1]->p.t_t.mean );
+    }
+
+
+  return 0;
+}
+
+static void 
+paired_postcalc (void)
+{
+  int i;
+
+  for(i=0; i < n_pairs ; ++i )
+    {
+      
+      pairs[i].correlation /= pairs[i].v[0]->p.t_t.std_dev * 
+                              pairs[i].v[1]->p.t_t.std_dev ;
+
+      pairs[i].correlation /= pairs[i].v[0]->p.t_t.n -1; 
+    }
+}